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| Bode plot up to a few 100 MHz |
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| joeqsmith:
--- Quote from: Martinn on October 08, 2023, 02:34:52 pm --- I think when one would buy a VNA, it should cover obvious applications like bluetooth antenna matching, which would already require the much more expensive 3.2 GHz version. --- End quote --- I would have liked to have found a used one that would cover 9kHz or so for PDN and other measurements. The old Agilent PNA I bought is limited to 300kHz and so I still use the old HP network analyzer for low frequencies. Some time ago I made an attempt at measuring a BLE antenna and matching circuit. You can see my botch job of attaching coax to it and then looking at the radiation pattern of the antenna. For S11/S21, the LiteVNA is fine. It's problem is active circuits like you asked about. Still, for a $120, it's a nobrainer to learn on. https://www.eevblog.com/forum/testgear/sub-$1000-vna-for-antenna-matching/msg4552187/#msg4552187 |
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